Selective diffractive optical element and a system including the same
US8553331B2 · kind B2 · utility
1Cited by
2References
24Claims
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Key dates
| Filing date | Dec 16, 2009 |
| Grant date | Oct 8, 2013 |
| Priority date | — |
| Expiry date | Feb 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/70108
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A selective diffractive optical element includes a first diffractive region having a first design on a first surface of a substrate, and a second diffractive region having a second design on the first surface of the substrate, the first and second designs being different, wherein, by altering a position of a cross-section of an illumination beam, the selective diffractive optical element outputs a desired proportion of the two diffractive patterns aligned along an optical axis of the illumination beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.